Tape running system for magnetic recording and reproducing apparatus

Abstract

A tape running system for a slide loading type magnetic recording and reproducing apparatus. The system comprises a stationary base plate mounted on a deck mechanism of the apparatus, a slide base mounted on the stationary base plate such that it is reciprocated with respect to the stationary base plate within a predetermined range, a pair of loading gears mounted on the lower surface of the stationary base plate and engaging with each other and connected to a pair of slant post assemblies through individual loading levers, and a rotational force transmitting unit transmitting the rotational force of the loading gears to the slide base for driving the slide base. The rotational force transmitting unit is connected between one of the pair of loading gears and the slide base and linearly reciprocates the slide base using the rotational force of the loading gears. The pair of slant post assemblies as well as the slide base are driven by the rotational force of the loading gears, thereby achieving the recent trend of compactness and light weight design.

What is claimed is: 
     
       1. A tape running system for a magnetic recording and reproducing apparatus comprising: a stationary base plate mounted on a main body of said apparatus;   a slide base mounted on said stationary base plate such that said slide base is reciprocatable with respect to said stationary base plate within a predetermined range;   a pair of loading gears mounted on a surface of said stationary base plate and engaging with each other, each of said pair of loading gears being directly connected to a pair of respective individual loading levers which are directly connected to a respective pair of slant post assemblies; and   means for transmitting a rotational force of said loading gears to said slide base for driving said slide base, said rotational force transmitting means being connected between one of said pair of loading gears and said slide base and linearly reciprocating said slide base using said rotational force of the loading gears;   whereby said pair of slant post assemblies as well as said slide base are concurrently driven by said rotational force of said loading gears and said slide base reciprocates to receive a tape carrying medium.   
     
     
       2. A tape running system for a magnetic recording and reproducing apparatus according to claim 1, wherein said rotational force transmitting means comprises: a cam lever rotatably mounted on said stationary base plate at a side of one of said pair of loading gears such that it is rotated about a shaft, said cam lever being provided at one end thereof with a first cam pin and at another end thereof with a second cam pin;   a cam slot provided at a lower surface of said one of the loading gears and receiving said first cam pin of said cam lever; and   a cam hole provided at a middle portion of said slide base and receiving said second cam pin of said cam lever.   
     
     
       3. A tape running system for a magnetic recording and reproducing apparatus according to claim 2, wherein said cam hole of the slide base is provided in a position controlling piece, said piece being mounted on said slide base such that its mounting position is adjusted. 
     
     
       4. A tape running system for a magnetic recording and reproducing apparatus according to claim 1, wherein said pair of slant post assemblies and said slide base are concurrently driven to move in a substantially same direction. 
     
     
       5. A tape running system for a magnetic recording and reproducing apparatus comprising: a stationary base plate mounted on a main body of said apparatus;   a slide base mounted on said stationary base plate such that said slide base is reciprocatable with respect to said stationary base plate within a predetermined range;   a pair of slant post assemblies disposed in a pair of guide slits in said stationary base and movable between a tape unloaded position and a tape loaded position;   a pair of loading gears mounted on a surface of said stationary base plate and engaging with each other, said pair of loading gears being directly connected to a pair of respective individual loading levers which are directly connected to said pair of slant post assemblies, said individual loading levers being folded in a position above said loading gears when said slant post assemblies are in a tape unloaded position, within a periphery of said pair of loading gears; and   means for transmitting a rotational force of said loading gears to said slide base for driving said slide base, said rotational force transmitting means being connected between one of said pair of loading gears and said slide base and linearly reciprocating said slide base using said rotational force of the loading gears;   whereby said pair of slant post assemblies as well as said slide base are concurrently driven by said rotational force of said loading gears and said slide base reciprocates to receive a tape carrying medium.   
     
     
       6. The tape running system for a magnetic recording and reproducing apparatus according to claim 5, wherein said rotational force transmitting means comprises: a cam lever rotatably mounted on said stationary base plate at a side of one of said pair of loading gears such that it is rotated about a shaft, said cam lever being provided at one end thereof with a first cam pin and at another end thereof with a second cam pin;   a cam slot provided at a lower surface of said one of the loading gears and receiving said first cam pin of said cam lever; and   a cam hole provided at a middle portion of said slide base and receiving said second cam pin of said cam lever.   
     
     
       7. A tape running system for a magnetic recording and reproducing apparatus according to claim 6, wherein said cam hole of the slide base is provided in a position controlling piece, said piece being mounted on said slide base such that its mounting position is adjusted. 
     
     
       8. A tape running system for a magnetic recording reproducing apparatus according to claim 5, wherein said pair of slant post assemblies and said slide base are concurrently driven to move in a substantially same direction.